IndiGo had last Friday, when it cancelled 1,600 flights of its total 2,300 daily flights, told DGCA that "the operational challenges mainly erupted due to revised phase-2 Flight Duty Time Limitation (FDTL) and that it could adequately anticipated, crew planning and rostering preparedness were insufficient in widespread disruption".

The committee has been told to submit its report within 15 days.

Besides this, DGCA has already issued show cause notices to both Elbers and Porqueras over the ongoing disruptions in the airline's operations.

They have been asked to submit their replies to these show cause notices by 6 pm on Monday.

The new norms, applicable to all domestic carriers, have come into force in two phases - July 1 and November 1 this year.

IndiGo has already temporarily secured major relaxations in the second phase norms till February 10.

The latest FDTL norms, which entail increased weekly rest periods to 48 hours, extended night hours, and limiting the number of night landings to only two against six earlier, were initially opposed by domestic airlines, including IndiGo and Tata Group-owned Air India.

But they were subsequently rolled out by the DGCA following the Delhi High Court's directives, albeit with a delay of over one year, in a phased manner, and with certain variations for airlines like IndiGo and Air India.

The norms were originally to be put in place from March 2024, but airlines, including IndiGo, sought a step-by-step implementation, citing additional crew requirements.